./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:02,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:02,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:02,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:02,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:02,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:02,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:02,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:02,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:02,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:02,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:02,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:02,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:02,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:02,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:02,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:02,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:02,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:02,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:02,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:02,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:02,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:02,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:02,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:02,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:02,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:02,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:02,611 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:02,612 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:02,613 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:02,613 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:02,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:02,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:02,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:02,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:02,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:02,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:02,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:02,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:02,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:02,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:02,622 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-09 09:09:02,656 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:02,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:02,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:02,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:02,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:02,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:02,658 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:02,658 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-09 09:09:02,659 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-09 09:09:02,659 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-09 09:09:02,659 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-09 09:09:02,659 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-09 09:09:02,659 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-09 09:09:02,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:02,660 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 09:09:02,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:02,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:02,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-09 09:09:02,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-09 09:09:02,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-09 09:09:02,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:02,661 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-09 09:09:02,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:02,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-09 09:09:02,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:02,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:02,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:02,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:02,663 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:02,664 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-09 09:09:02,664 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2021-11-09 09:09:02,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:02,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:02,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:02,978 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:02,979 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:02,980 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-11-09 09:09:03,045 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/data/d4ce9442e/99e754da919b40728a2c616121a04a70/FLAG25459b1a0 [2021-11-09 09:09:03,481 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:03,482 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-11-09 09:09:03,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/data/d4ce9442e/99e754da919b40728a2c616121a04a70/FLAG25459b1a0 [2021-11-09 09:09:03,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/data/d4ce9442e/99e754da919b40728a2c616121a04a70 [2021-11-09 09:09:03,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:03,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:03,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:03,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:03,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:03,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f303400 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:03, skipping insertion in model container [2021-11-09 09:09:03,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:03,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:04,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,082 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:04,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,108 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:04,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04 WrapperNode [2021-11-09 09:09:04,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:04,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:04,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:04,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,123 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,142 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:04,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:04,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,161 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:04,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:04,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:04,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-09 09:09:04,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:04,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:04,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:04,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:04,402 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:04,403 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-11-09 09:09:04,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04 BoogieIcfgContainer [2021-11-09 09:09:04,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:04,406 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-09 09:09:04,406 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-09 09:09:04,413 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-09 09:09:04,414 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,414 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.11 09:09:03" (1/3) ... [2021-11-09 09:09:04,416 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71a59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:09:04, skipping insertion in model container [2021-11-09 09:09:04,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,417 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (2/3) ... [2021-11-09 09:09:04,417 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@71a59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.11 09:09:04, skipping insertion in model container [2021-11-09 09:09:04,417 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-09 09:09:04,418 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04" (3/3) ... [2021-11-09 09:09:04,419 INFO L389 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2021-11-09 09:09:04,527 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-09 09:09:04,527 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-09 09:09:04,527 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-09 09:09:04,527 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-09 09:09:04,527 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-09 09:09:04,527 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-09 09:09:04,528 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-09 09:09:04,528 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-09 09:09:04,542 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:04,561 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-11-09 09:09:04,562 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:04,562 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:04,568 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-09 09:09:04,568 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 09:09:04,568 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-09 09:09:04,569 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 21 states, 20 states have (on average 1.65) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:04,572 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 13 [2021-11-09 09:09:04,572 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-09 09:09:04,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-09 09:09:04,573 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-11-09 09:09:04,573 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-09 09:09:04,580 INFO L791 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue ~LOCK~0 := 0; 10#L-1true havoc main_#res;havoc main_#t~nondet0, main_#t~nondet2, main_#t~post3, main_#t~nondet1, main_#t~nondet4, main_#t~post5, main_~got_lock~0, main_~old~0, main_~new~0;havoc main_~got_lock~0;main_~old~0 := 0;main_~new~0 := 0; 16#L34true assume 0 != main_#t~nondet0;havoc main_#t~nondet0; 12#L35-3true [2021-11-09 09:09:04,581 INFO L793 eck$LassoCheckResult]: Loop: 12#L35-3true main_~got_lock~0 := 0; 13#L37true assume !(0 != main_#t~nondet2);havoc main_#t~nondet2; 5#L37-2true assume !(0 != main_~got_lock~0); 15#L35-1true assume !!(0 != main_#t~nondet1);havoc main_#t~nondet1; 12#L35-3true [2021-11-09 09:09:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:04,587 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-09 09:09:04,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:04,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033727247] [2021-11-09 09:09:04,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:04,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,716 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,764 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:04,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1212883, now seen corresponding path program 1 times [2021-11-09 09:09:04,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:04,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842912722] [2021-11-09 09:09:04,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:04,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,776 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:04,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,794 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:04,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:04,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1804975604, now seen corresponding path program 1 times [2021-11-09 09:09:04,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:04,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689191664] [2021-11-09 09:09:04,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:04,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,812 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 09:09:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 09:09:04,828 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 09:09:04,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.11 09:09:04 BoogieIcfgContainer [2021-11-09 09:09:05,000 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-09 09:09:05,001 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 09:09:05,001 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 09:09:05,001 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 09:09:05,002 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:04" (3/4) ... [2021-11-09 09:09:05,005 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-09 09:09:05,040 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 09:09:05,040 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 09:09:05,042 INFO L168 Benchmark]: Toolchain (without parser) took 1174.39 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 51.9 MB in the beginning and 90.7 MB in the end (delta: -38.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:05,043 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:05,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.66 ms. Allocated memory is still 90.2 MB. Free memory was 51.7 MB in the beginning and 64.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,045 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 90.2 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,045 INFO L168 Benchmark]: Boogie Preprocessor took 20.11 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 61.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:05,046 INFO L168 Benchmark]: RCFGBuilder took 241.25 ms. Allocated memory is still 90.2 MB. Free memory was 61.7 MB in the beginning and 52.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,047 INFO L168 Benchmark]: BuchiAutomizer took 593.97 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 92.4 MB in the end (delta: -39.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. [2021-11-09 09:09:05,047 INFO L168 Benchmark]: Witness Printer took 39.82 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 90.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 09:09:05,058 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 90.2 MB. Free memory is still 68.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 239.66 ms. Allocated memory is still 90.2 MB. Free memory was 51.7 MB in the beginning and 64.1 MB in the end (delta: -12.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.12 ms. Allocated memory is still 90.2 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.11 ms. Allocated memory is still 90.2 MB. Free memory was 62.8 MB in the beginning and 61.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 241.25 ms. Allocated memory is still 90.2 MB. Free memory was 61.7 MB in the beginning and 52.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 593.97 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 52.8 MB in the beginning and 92.4 MB in the end (delta: -39.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 16.1 GB. * Witness Printer took 39.82 ms. Allocated memory is still 115.3 MB. Free memory was 92.4 MB in the beginning and 90.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {got_lock=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7b5df9d1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2fb30ea4=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@13108888=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2e53976b=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@40c0befe=0, new=0, old=0, LOCK=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@59e9d7b5=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; [L32] int got_lock; [L33] int old = 0, new = 0; [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-09 09:09:05,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96cac274-4f0a-447a-b80d-03007f3df22c/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)